KR940027345A - Low-Noise Block Converter for Narrow-Band Satellite Data Reception - Google Patents

Low-Noise Block Converter for Narrow-Band Satellite Data Reception Download PDF

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Publication number
KR940027345A
KR940027345A KR1019930007660A KR930007660A KR940027345A KR 940027345 A KR940027345 A KR 940027345A KR 1019930007660 A KR1019930007660 A KR 1019930007660A KR 930007660 A KR930007660 A KR 930007660A KR 940027345 A KR940027345 A KR 940027345A
Authority
KR
South Korea
Prior art keywords
phase
noise block
block converter
narrow
oscillation frequency
Prior art date
Application number
KR1019930007660A
Other languages
Korean (ko)
Inventor
강현구
Original Assignee
윤종용
삼성전기 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 윤종용, 삼성전기 주식회사 filed Critical 윤종용
Priority to KR1019930007660A priority Critical patent/KR940027345A/en
Publication of KR940027345A publication Critical patent/KR940027345A/en

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Abstract

본 발명은 인공위성을 이용한 데이타 전송용 소형지구국에 적용되는 LNB에 관련한다. 기존에는 LNB의 LO의 주파수 범위가 10.75GHz±1.5MHz이기 때문에 발진주파수 편차(1.5MHz) 이내의 협대역 데이타를 수신하는 경우 IF 신호로부터 베이스밴드의 복원이 어려웠다.The present invention relates to an LNB applied to a small earth station for data transmission using satellites. Previously, since the LNB's LO frequency range was 10.75GHz ± 1.5MHz, it was difficult to recover the baseband from the IF signal when receiving narrowband data within the oscillation frequency deviation (1.5MHz).

본 발명은 LO의 출력을 PLL 방식으로 제어하여 발진주파수의 편차가 수백∼수십KHz 내에서 로킹되게 함으로써, 베이스 밴드의 대역이 협대역인 즉, 데이타 레이트가 좁은 데이타의 수신시 베이스밴드의 복원을 정확하게 이룰 수 있게 된다.According to the present invention, the output of the LO is controlled by the PLL method so that the deviation of the oscillation frequency is locked within several hundreds to several tens of KHz. You can achieve this correctly.

Description

협대역 위성 데이타 수신을 위한 저잡음 블록 컨버터Low Noise Block Converter for Narrowband Satellite Data Receive

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제 2 도는 본 발명의 저잡음 블록콘버터의 회로 구성도.2 is a circuit diagram of a low noise block converter of the present invention.

Claims (1)

인공위성을 이용한 데이타 전용전송용 소형 지구국(VSAT)에 적용하기 위한 저잡음 블럭 컨버터에 있어서, 믹서(16)에 발진주파수를 제공하는 LO(17)의 발진주파수(10.75GHz±1.5MHz)와 50MHz를 215배 체배한 기준 주파수발생기(24)의 기준주파수(10.75GHz)가 위상 검출기(23)에서 위상검출되게 구성하고, 상기 위상 검출기(23)에서 검출된 위상차신호가 LPF(25)를 거쳐 위상 오차를 줄이는 방향의 LO 발진전압값으로 상기 LO(17)로 궤환되게 구성하여, 상기 LO(17)의 발진주파수 오차가 일정한 범위내에 들었을 때 위상 록킹이 걸리도록 구성한 것을 특징으로 하는 협대역 위성데이타 수신을 위한 저잡음 블럭 컨버터.A low noise block converter for application to a small earth station (VSAT) for data-only transmission using satellites, the oscillation frequency (10.75 GHz ± 1.5 MHz) of the LO 17 providing the oscillation frequency to the mixer 16 and 215 50 MHz. The reference frequency (10.75 GHz) of the multiplied reference frequency generator 24 is configured to phase detect by the phase detector 23, and the phase difference signal detected by the phase detector 23 passes through the LPF 25 to correct the phase error. Narrow-band satellite data reception, characterized in that configured to be fed back to the LO (17) with the LO oscillation voltage value in the decreasing direction, so that phase locking occurs when the oscillation frequency error of the LO (17) falls within a certain range. Low noise block converter. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930007660A 1993-05-04 1993-05-04 Low-Noise Block Converter for Narrow-Band Satellite Data Reception KR940027345A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930007660A KR940027345A (en) 1993-05-04 1993-05-04 Low-Noise Block Converter for Narrow-Band Satellite Data Reception

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930007660A KR940027345A (en) 1993-05-04 1993-05-04 Low-Noise Block Converter for Narrow-Band Satellite Data Reception

Publications (1)

Publication Number Publication Date
KR940027345A true KR940027345A (en) 1994-12-10

Family

ID=67137401

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930007660A KR940027345A (en) 1993-05-04 1993-05-04 Low-Noise Block Converter for Narrow-Band Satellite Data Reception

Country Status (1)

Country Link
KR (1) KR940027345A (en)

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